TY  JOUR
TI  Study of physical activity among middle school students in China: current status, challenges, and countermeasures
KW  secondary education
KW  China
KW  physical activity
KW  state standards
KW  final certification
KW  infrastructure
KW  pedagogical control
JO  Scientific notes of P. F. Lesgaft University
AU  Zhang, G..
AU  Lavruhina, G.M.
AU  Pan, J..
PY  2025
IS  0
PB  National State University of Physical Education, Sports and Health named after P.F. Lesgaft